The following sentences should I use a adverb or adjective?

1. I don't fell well.
The word "well" is an adjective?
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2. The children did well in the sports competition.
The use of the word "well" in this sentence is an adverb?
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3. The sick people appeared pale and thin.
The words, pale and thin are used as adjectives?
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4. That was surely a good program.
The word "surely" is used as a adjective?
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5. The plan seemed bad at the time.
The word "bad" is used as a adjective?
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